Children wait in line for food at the Idomeni border crossing on the Greek - FYR of Macedonia border. With more than 24,000 refugees stranded in Greece and resources stretched thin, long queues that can stretch for hundreds of meters in order to get a sandwich, are a daily occurrence at the Idomeni border station. Those who are most affected by this are young children who according to UNHCR account for 36% of the refugees arriving to Europe in 2016. Many of them are unaccompanied or have been separated from their parents. ; More than 24,000 refugees are trapped in Greece as the Western Balkan route to Northern Europe mostly shuts down. The FYR of Macedonia border crossing is now only open to a few hundred Syrians and Iraqis per day, creating a backlog at the unofficial border crossing of Idomeni as well as the port of Piraeus in Athens. Only those with passports or official ID cards may cross. Afghans are barred completely. It's the latest in a series of restrictions imposed by Austria and a group of Western Balkan countries over the past few months aimed at stemming the migrant flows toward Germany, the destination of choice for most people. Text: Tania Karas/UNHCR